Improvement in molds for and processes of manufacturing glass articles



T. B. AT T ER BU RY. Mold for and Process of Man ufact uri'ng Glass Articles.

Patenfed Jan. 26 I875.

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U ITED STATES PATENT THOMAS B. ATTnaBUsY, onriT'TsBUne, PENNSYLVANIA, nssrcnon on ONE-HALF HIS RIGHT o AMEs s. ATTER'BURY, on SAME PLACE.

iMPROVEMENT m moms F0 AND PROCESSES oF MANUFACTURING GLASS ARTICLES.

Specificstion forming part of Letters Patent No. 159,061, dated January 26, 1875; application filed December 19, 1874.

To all whom it may concern Be it known that" I, THOMAS B-.ATTERBU1Y,Z

of the'city of Pittsburg, county-of Allegheny and State of-Pennsylvania, have invented an Improvement in Molds for, and Process of Making, Fruit-Bowls, Lamp-Bowls, and S211- vers, and also in the construction of such glass or vitreous articles; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figures 1, 2, and 3 are vertical sections of a lam p-bowl, a fruit-bowl, and a salver or cake stand, made according to my invention. Fig. 4 is a horizontal section of the lamp-bowl.

Fig. 5 is "a vertical central'section er the mold viz. one to gather up the piece of glass to form the screw-peg and place the same in a socket formed in a vertically-movable screw threaded section of mold, and another workman to blow the remaindcrof the article within the mold. :In this operation the pressure of the glass being ,blown comesupon the piece placed in the socket, and causes the said piece of glass, which is hot, to take the impression of the screw-thread in the socket, and also unite with the blown glass.

My present invention does away with the services of the first workman, and enables the blower alone, after he has blown his'glass into globe shape, to finish the lamp-bowl or fruitbowl or salver, as the case may be, within the mold,and with either a seamless screw-threaded or a seamless plain socket in its bottom.

The nature of my invention consists, first, in the mold-section by which the collar and socket are formed; second, in the process; and, third, in the article produced, as herein described and specifically claimed.

' In the drawings, A, Figs. 1,2, and 3, desighates a lamp-bowl, a fruitbowl, and a saiver,

and B a seamless socket blown in each of these articles. D is a projecting glass collar on the bottom of the lamp-bowl or salver,'in which the socket B is formed. The seamless socket rec'eives the upper end of a stand or pedestal, and the projecting glasscollar dispenseswith theuse ot the brass collar ordinarily used at the joint between the stand and the bowl. The socket represented has a seamless screw thread, g, blown in it, and when this thread is employed a rubber gasket, a, is interposed between the shoulder of the pedestal or stand and the bottom of the glass forming the socket, for the purpose of preventing fracture of .the glass when the parts are screwed together. The

screw-socket is formed by providing a rcvolw in g and verticallynovable-screwthreaded section of mold O, and extending its upper end through and beyond the inner surface of the bottom of the ordinary two-part mold O O,

as shown, and having the blower place his I the machine. E is a lever, with a toothed sector, E, on one of its arms. The sector gears with the pinion I), and causes it to make several revolutions to the right or left, and the nut 61 moves it up or down with. the mold-section 0 while it is revolving, By moving the lever in one direction the screw-threaded sec tion of the mold is run upward by the action of the nut d upon the screw Z, and by rcversing the movement it is run down. If a screw is not required the end I; of the section 0 is made plain on its periphery.

The upper section, 0 O, of the mold, may be in form of a fruit or flower bowl, as in Fig. 2 or it may be in form (or nearly so) of the salveror cake-dish, as shown in Fig. 3. This section is operated in the usual manner, and its bottom is shaped to permit the socket B to be formed on the articles.

In making the salver I take the glass article in the form shown in Fig. 2, which is produced by my prooess a-nd whilozhot flare or press it out to the shape shown in Fig. 3.

' What I-olaim is- 1. The *'ortically-movablo mold-section C, having its upper end. protruded through and -exte1gded up above the bottom of the moldsection, which forms a, lamp-bowl, a fruit-bowl,

' or asalver, so that the blower can biow the glass for forming tho collar and socket upon the top and. periphery of the exposed portion of the movable section 0, substantially as d escribed. I

for a, lampfoowi, afmit bowi, or a solver, gm bringing hot glass in globe form upon the protruding eni of the movable; 55 38 61011 05mm, and continuing the blowing operation anti: tho al'tielo with a oolistr upon and a socket in its. bottom is formed, and then moving the movable sootion down oot of the sookat, subatantially as decrioed.

3. A blown lamp-bow a fruit-bow or a solver of gioss or othor vitreous material, constrilotefi with a oollm' upon and a blown soon:- less socket, B, in its bottom, substantially as described. 1 t EH08. B. ATTERBUBY. Witnesses:

JNo IE. Soon WM; J EMTTERSGN. 

